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Memory Trade in
Save money by trading in your original chips! View available memory rebates.
From the purchase date of qualifying memory from OWC, you have 60 days to trade-in your old memory for a cash rebate!
Just fill out OWC's online rebate form or contact OWC Customer Service after you receive and install your new memory.
Note: Apple OS 10.7.5 or Later REQUIRED for utilization of more than 8GB of total system memory.
This OWC Memory is compatible with... Learn how to find your Mac's model ID or PC specs
MacBook White Unibody
MacBook (Mid 2010)
(May, 2010)
Model ID: MacBook7,1
2.4GHz
MacBook Pro Unibody
MacBook Pro (13-inch Mid 2010)
(April, 2010)
Model ID: MacBookPro7,1
2.4GHz, 2.66GHz
Mac mini Intel
Mac mini (Mid 2010)
(June, 2010)
Model ID: Macmini4,1
2.4GHz, 2.66GHz
Mac mini Intel
Mac mini (Mid 2010 Server)
(June, 2010)
Model ID: Macmini4,1
2.66GHz
iMac Intel
iMac (27-inch Late 2009)
(October, 2009)
Model ID: iMac11,1
2.66GHz i5, 2.8GHz i7
PC Laptop
PC Laptops
Compatible with Intel / AMD Process based PCs capable with the specifications listed above. Memory complies with JEDEC Specifications, document JESD79-3B.

Customer Ratings

Write a Review 4.9 / 5 713 out of 733 (97%) reviewers would recommend this product
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Verified Buyer
Reviewer: Need4Speedrw Location: Hamilton, Ontario, Canada Age: 45-54 Experience Level: Power User Owned Product: less than a month
Rating: 5/5 Memory Upgrade, Mac Mini 4.1 (16 GB) August 7, 2018 Received shipment quickly and the item was well packaged. I installed 2, 8 GB ram modules in all of about five minutes with zero difficulty. Turned the Mac Mini on and it recognized the new RAM almost instantaneously. There's a definite improvement over having just 2 x 2 GB in this Mac Mini (mid 2010). Thank you OWC, very satisfied with this purchase!

I would recommend this item to a friend! Customer Videos:

Verified Buyer
Reviewer: retiredguy Location: Austin, TX Age: Over 65 Experience Level: Home User Owned Product: over 6 months
Rating: 5/5 Don't hesitate to upgrade your ram August 7, 2018 Great service and very helpful--called to confirm I was ordering the right ram and got great advise. The video instruction they provide is excellent-I am a home owner user with very little talent but upgrading the ram in my Mac desktop, late 2009 27 inch, was a 5 minute job. The core must accept the ram and in my case did--I7 core model 11,1 Even though the title of the product may not incorporate your particular model, as in my case the ram fits and a phone call was all that I needed to complete the order. Great guarantee so just do it! Increasing the ram really helps, especially considering that operating system upgrades can slow your computer over time.

I would recommend this item to a friend! Customer Videos:

Verified Buyer
Reviewer: SteveS0353 Location: San Diego, CA Age: Over 65 Experience Level: Power User Owned Product: 1-3 months
Rating: 5/5 MacBook Life Extended August 7, 2018 My daughter's MacBook was running painfully slow with the latest OS and updated apps. The solution was to double the physical memory from 4MB to 8MB. This affordable upgrade has returned the MacBook to being responsive and extended the useful life of the MacBook.

I would recommend this item to a friend! This review is from 8.0GB (2x 4GB) PC-8500 DDR3 kit for iMac '09; MacBook/Pro Unibody '08-10. Customer Videos:

Verified Buyer
Reviewer: Ei4115 Location: Lee Center,Ny Age: 35-44 Experience Level: Power User Owned Product: less than a month
Rating: 5/5 Just what I needed July 29, 2018 Went from 4gb to 16gb. Easy install and really speeded use my older iMac.

I would recommend this item to a friend! This review is from 16.0GB (4x 4GB) PC-8500 DDR3 kit for all Apple iMac 21.5" and 27" Models (Oct/2009). Customer Videos:

Verified Buyer
Reviewer: gdesvaux Location: Mauritius Experience Level: IT Professional
Rating: 4/5 Working good for mac mini 2.26 late 2009 July 28, 2018 No problem.

2x4Gb (total 8Gb Ram)

Working Perfectly for my Mac Mini 2.26 Late 2009

Thanks

I would recommend this item to a friend! This review is from 8.0GB (2x 4GB) PC-8500 DDR3 kit for iMac '09; MacBook/Pro Unibody '08-10. Customer Videos:

Verified Buyer
Reviewer: macbook70 Location: phoenix, az. Age: Over 65 Experience Level: Home User Owned Product: over 6 months
Rating: 5/5 money well spent July 26, 2018 I purchased my macbook in 2008, the late, intel, aluminum body. it came with 2gb of memory and the upgrade then to 4 gb was $200. I just installed the 4gb of memory i purchased from OWC for $32. An fyi, the youtube video about installation instructs one to use a 00 philips screwdriver, WRONG, one needs the 000 phillips. The installation went great and my macbook is now much quicker. Also of note, the delivery was just a couple days and securely packaged.

I would recommend this item to a friend! This review is from 4.0GB (2x 2GB) PC-8500 DDR3 kit for MacBook/MacBook Pro Unibody, iMac 2009, Mac mini 2009/2010. Customer Videos:

Verified Buyer
Reviewer: JimmyMTL Location: Ottawa, Ontario Age: 45-54 Experience Level: IT Professional Owned Product: 1-3 months
Rating: 5/5 Easy Peasy Lemon Squeezy July 25, 2018 The RAM was a breeze to install with one minor hiccough, the notches on my motherboard were inverse to those on the video. Since the RAM is notched, and since I could see how the others were installed, it was simple and fast.

Great product,

I would recommend this item to a friend! This review is from 4.0GB (2x 2GB) PC-8500 DDR3 kit for MacBook/MacBook Pro Unibody, iMac 2009, Mac mini 2009/2010. Customer Videos:

Verified Buyer
Reviewer: CaliMacLover Location: Moreno Valley, CA Age: 35-44 Experience Level: Home User Owned Product: over 6 months
Rating: 5/5 Saved a dying MacBook July 24, 2018 Purchased this memory upgrade to replace a bad memory chip I had in an old 13" MacBook. It originally only had 4 gigs of memory (2 x 2 gig memory cards) and only one would read. Purchased this upgrade to get the MacBook processing a little faster and it did just the trick. Definitely still need to replace the entire MacBook but this memory upgrade works wonderfully.

Recently upgraded the hard drive and I wish I had known about this company and purchased it from them. I will be doing all my shopping for discounted Mac products here, the order was received promptly and the products are top notch.

I would recommend this item to a friend! This review is from 4.0GB PC-8500 DDR3 1066MHz SO-DIMM 204 Pin SO-DIMM Memory Upgrade Module PC3-8500. Customer Videos:

Verified Buyer
Reviewer: Technomagnon Location: Middle America Age: 35-44 Experience Level: Home User Owned Product: 1-3 months
Rating: 5/5 Great quality, outstanding instructions! July 18, 2018 This was a simple memory upgrade and OWC made it even easier. The memory itself came quickly and well packaged to prevent any damage from mis-handling during shipping. The tutorial video walked through the process and made it very easy to repeat on my own. Again, upgrading memory isn't rocket science but this experience reminded me why I love doing business with OWC. Thank you all for another great experience!

I would recommend this item to a friend! This review is from 16.0GB (4x 4GB) PC-8500 DDR3 kit for all Apple iMac 21.5" and 27" Models (Oct/2009). Customer Videos:

Verified Buyer
Reviewer: europeka Location: Québec Age: Over 65 Experience Level: Home User Owned Product: over 6 months
Rating: 5/5 Excellent July 17, 2018 The product is excellent and it is fast to install on my 2009 iMac.

I would recommend this item to a friend! This review is from 16.0GB (4x 4GB) PC-8500 DDR3 kit for all Apple iMac 21.5" and 27" Models (Oct/2009). Customer Videos:

Verified Buyer
Reviewer: KeithD Location: USA Owned Product: less than a month
Rating: 5/5 Great Source July 3, 2018 Ordered memory for my Macbook on a Friday and rec'd it the following Mon. via regular mail. The price was considerably better than Amazon & other sources.

If that weren't enough my sluggish Mac is zipping along nicely with the added RAM. I should mention the support info on the site is excellent - very pleased. Keith D.

I would recommend this item to a friend! This review is from 4.0GB (2x 2GB) PC-8500 DDR3 kit for MacBook/MacBook Pro Unibody, iMac 2009, Mac mini 2009/2010. Customer Videos:

Verified Buyer
Reviewer: llapace Location: Tampa,FL Age: 18-24 Experience Level: Hobbiest Owned Product: 1-3 months
Rating: 5/5 Excellent experience. Great product. July 1, 2018 Sales and tech support were nothing but pleasant and helpful. New RAM works flawlessly, accompanied with SSD the boot time of my 2010 13in MBP went from over a minute to around 10 seconds.

I would recommend this item to a friend! This review is from 8.0GB PC3-8500 DDR3 1066MHz SO-DIMM 204 Pin SO-DIMM Memory Upgrade Module PC3-8500. Customer Videos:

Verified Buyer
Reviewer: nachostanda Location: Fresno, CA Age: 35-44 Experience Level: Power User Owned Product: 1-3 months
Rating: 5/5 Great RAM June 13, 2018 Boom, my stock 4gRAM late 2009 iMac is a real beast now that I've upgraded to 16g RAM from OWC. Great product and would recommend!

I would recommend this item to a friend! This review is from 16.0GB (4x 4GB) PC-8500 DDR3 kit for all Apple iMac 21.5" and 27" Models (Oct/2009). Customer Videos:

Verified Buyer
Reviewer: teachart68 Location: Fort Wayne, IN Age: 45-54 Experience Level: Power User Owned Product: less than a month
Rating: 5/5 Great Inexpensive Upgrade June 6, 2018 Had a late 2009 iMac that could barely chug along. Very slow with Adobe CC. After adding the new RAM everything is much, much, much faster!

I would recommend this item to a friend! This review is from 16.0GB (4x 4GB) PC-8500 DDR3 kit for all Apple iMac 21.5" and 27" Models (Oct/2009). Customer Videos:

Verified Buyer
Reviewer: P2images Location: Old Saybrook Age: 55-65 Experience Level: IT Professional Owned Product: 1-3 months
Rating: 5/5 These were flawless May 14, 2018 Packed well, fast shipping, great instructions, and no memory errors.. would buy again and recommend to anyone.

I would recommend this item to a friend! This review is from 32.0GB (4x 8GB) PC3-8500 DDR3 kit for Late 2009 iMac11,1 models.. Customer Videos:

Verified Buyer Top 250 Contributor
Reviewer: MaRtYnMcfly Location: Monterrey NL, Mexico Age: 35-44 Experience Level: IT Professional Owned Product: over 6 months
Rating: 5/5 Excelent April 30, 2018 excelent work fine and easy to setup only two screws

I would recommend this item to a friend! This review is from 8.0GB (2x 4GB) PC-8500 DDR3 kit for iMac '09; MacBook/Pro Unibody '08-10. Customer Videos:

Verified Buyer
Reviewer: Nouxboux27 Experience Level: Power User Owned Product: less than a month
Rating: 5/5 Very happy with my purchase April 25, 2018 I upgraded my mom's 2009 iMac from the stock 2 RAM to 8. It's like a new machineI Installation was a breeze and I'm certain (based on my previous experience with OWC RAM) that the quality of the RAM is top-notch. Highly recommended!

I would recommend this item to a friend! This review is from 8.0GB (2x 4GB) PC-8500 DDR3 kit for iMac '09; MacBook/Pro Unibody '08-10. Customer Videos:

Verified Buyer
Reviewer: MrPhysics2 Location: OKC, OK Age: 35-44 Experience Level: Power User Owned Product: 1-3 months
Rating: 5/5 Everything works as expected April 22, 2018 As usual OWC memory always works up to the levels claimed on the website even if they are above what Apple officially supports. I have never had an OWC memory chip go bad.

I would recommend this item to a friend! This review is from 8.0GB (2x 4GB) PC-8500 DDR3 kit for iMac '09; MacBook/Pro Unibody '08-10. Customer Videos:

Verified Buyer
Reviewer: DrDon Age: 55-65 Experience Level: Home User Owned Product: 1-3 months
Rating: 5/5 Best upgrade for a mini !! April 22, 2018 OWC provided quick shipping for my memory. The online video tutorial made installing the new ram a snap. Highly recommend !!!

I would recommend this item to a friend! This review is from 8.0GB (2x 4GB) PC-8500 DDR3 1066MHz SO-DIMM 204 Pin Memory Upgrade Kit. Customer Videos:

Verified Buyer
Reviewer: Alanaml Location: Dublin Ireland Age: Over 65 Experience Level: Home User Owned Product: over 6 months
Rating: 5/5 This is just what i needed to use my Digital audio software. April 13, 2018 I actually thought my refurbished MacBook could only take 4Gigs Ram until I discovered your website. I now have 8Gigs which allows me to run digital audio software which I previously could not do. Great product and great tutorial videos and PDFs. This is the first time I have tried to do anything myself with by MacBook and I am thrilled with my success.Keep up the good work.

I would recommend this item to a friend! This review is from 8.0GB (2x 4GB) PC-8500 DDR3 kit for iMac '09; MacBook/Pro Unibody '08-10. Customer Videos:

Verified Buyer
Reviewer: Ernie22 Location: Corpus Christi, Texas Age: 55-65 Experience Level: Home User Owned Product: less than a month
Rating: 5/5 Upgrade April 12, 2018 Upgrading the Ram or memory for my MacBook Pro went better than I thought. When I checked with Apple they told me I could only upgrade to 8 GB, but when I asked a sales represennitive from Macsales he. Cjexked my model and let me know that I could upgrade trombone 4GB to 16 GB of Ram, and again the instructional videos that Macsales offer online show you how easy and inexpensive it is to upgrade. My MacBook Pro works great.

I would recommend this item to a friend! Customer Videos:

Verified Buyer
Reviewer: Lpx2lqz
Rating: 5/5 Memory worth the price April 6, 2018 Memory upgrade is worth the price

I would recommend this item to a friend! Customer Videos:

Verified Buyer
Reviewer: JeffS12 Location: Orange County, CA Age: 45-54 Experience Level: Home User Owned Product: 1-3 months
Rating: 5/5 Turned my old Mac into a new beast March 29, 2018 Great product and easy to install.

This review is from 16.0GB (4x 4GB) PC-8500 DDR3 kit for all Apple iMac 21.5" and 27" Models (Oct/2009). Customer Videos:

Verified Buyer
Reviewer: Kroniu Location: Poland Age: 25-34 Experience Level: Power User Owned Product: less than a month
Rating: 5/5 Top quality product March 28, 2018 Bought this additional RAM for my wife's 2009 iMac as a part of my big upgrade plan: "New life for good ol' Mac" ;) Top quality product, works as expected. Installation process is super easy. Adding RAM to your computer is always a good idea but getting rid of old HDD in favor of SSD is a real game changer :)

I would recommend this item to a friend! This review is from 8.0GB (2x 4GB) PC-8500 DDR3 kit for iMac '09; MacBook/Pro Unibody '08-10. Customer Videos:

Verified Buyer
Reviewer: cesaydah Location: carmichael, ca; late of nanuet, ny Age: Over 65 Experience Level: Home User Owned Product: 1-3 months
Rating: 5/5 As easy as advertised March 27, 2018 I quadrupled the RAM on my old MacBook Pro from 2009. After watching some YouTube videos on how to do it, I took the plunge, ordered from MacSales, and -- a miracle -- my old sluggish machine that took forever to respond became a modern laptop with a life. I am now considering updating the hard drive to a solid state drive from MacSales to turn a really good old machine into a truly great device, as flexible and responsive as my iMac.

I would recommend this item to a friend! This review is from 8.0GB (2x 4GB) PC-8500 DDR3 kit for iMac '09; MacBook/Pro Unibody '08-10. Customer Videos:

OWC Memory 16.0GB 2 x 8.0GB PC8500 DDR3 Mfr P/N: OWC8566DDR3S16P OWC SKU: OWC8566DDR3S16P OWC Memory Upgrade Kit Lifetime OWC Limited Warranty Ships: Same Day only $144.99
Add to CartOther World Computing OWC8566DDR3S16P In Stock, Click to Buy Now
Additional Capacities & Kits:
  • 2GB
    • Ships: Same Day
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  • 4GB
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    • $36.99
  • 4GB (2x2GB)
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    • Matched Kit for $29.99
  • 6GB (2GB+4GB)
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  • 8GB (2x4GB)
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    • Matched Kit for $69.99
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  • 16GB (2x8GB)
  • 16GB (4x4GB)
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    • Matched Kit for $139.97
  • 32GB (4x8GB)
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